where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -

631 views
Technical Discussions
Tiah Nam Kuan Paul
NDT Inspector
Singapore, Joined Jan 2000, 5

Tiah Nam Kuan Paul

NDT Inspector
Singapore,
Joined Jan 2000
5
04:02 Jan-04-2000
Beam spread


Is it required to do a check on beam spread periodically?


 
 Reply 
 
J. Mark Davis
Teacher, And Consultant
University of Ultrasonics, Birmingham, Alabama, USA, Joined Mar 2000, 85

J. Mark Davis

Teacher, And Consultant
University of Ultrasonics, Birmingham, Alabama,
USA,
Joined Mar 2000
85
03:23 Jan-05-2000
Re: Beam spread
:
: Is it required to do a check on beam spread periodically?

Recalling the ASME Code, it was required when you were to size a flaw. Currently flaw sizing using Time of Flight (TOF) methods and Creeping Wave methods this is no longer required.

Generally, when using a dB drop flaw sizing method you tend to size the beam spread when the flaw is smaller than the beam spread.




 
 Reply 
 
andy cunningham
andy cunningham
05:13 Feb-16-2000
Re: Beam spread
: dont just read, think. sound will propagate through a medium as a hemisphere regardless of wavelength. the so called beam spread is the use of 3 angles of different intensities. tofd would not work if you think of sound as a beam. as i said before read think and understand. dont be mindless and regurgitate someone elses miscomprehension
does that answer your question (no)
yes do the checks to keep to the requirments 0f a quality system.
: Is it required to do a check on beam spread periodically?
all the best acc




 
 Reply 
 

Product Spotlight

Immersion systems

ScanMaster ultrasonic immersion systems are designed for high throughput, multi shift operation in a
...
n industrial or lab environment. These fully integrated systems provide various scanning configurations and incorporate conventional and phased arrays technologies to support diverse applications, such as inspection of disks, bars, shafts, billets and plates. All of ScanMaster immersion systems are built from high accuracy scanning frames allowing for scanning of complex parts and include a multi-channel ultrasonic instrument with exceptional performance. The systems are approved by all major manufacturers for C-scan inspection of jet engine forged discs. Together with a comprehensive set of software modules these flexible series of systems provide the customer with the best price performance solutions.
>

NEW - TD Focus-ScanRX

The NEW Next Generation Advanced UT platform, TD Focus ScanRX - Also available as a card stack solut
...
ion. Key Improvements 1. Data acquisition is significantly faster than current design 2. Better aesthetic – closely aligns with HandyScan RX 3. Improved IP rating (Target IP66) 4. Ruggedized housing 5. Connectors are protected from impact and ingress 6. Integrated stand and separate retractable handle easy to keep clean) 7. Touchscreen with ruggedized display glass 8. 3-Axis encoder input
>

FMC/TFM

Next generation for Phased Array UT is here now with FMC/TFM! Have higher resolution imaging, impr
...
oved signal to noise ratio, characterize, size and analyze defects better with access to several wave mode views and save raw FMC data for higher quality analysis.  Some of the benefits are:
  • Beautiful Image! Easier to understand what you're looking at
  • Completely focused in entire image or volume
  • Much easier to define setups before inspection
  • Easier to decipher geometry echoes from real defects
  • Oriented defects (e.g. cracks) are imaged better
  • See image from different wave modes from one FMC inspection
  • FMC data can be reprocessed/analyzed without going back to the field
>

GUL Subsea Solutions - Screeening & Monitoring

To inspect new and existing subsea lines, you need proven technology and experience. GUL offers it's
...
technology to solve this challenge: GUL Subsea and gMAT Transducer Rings.
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window